baber/WOPTO huggingface dataset:
Patent GB-1370110-A (GB)
Title: Exhaust valve apparatus for protecting the stem of an exhaust  valve of an internal combustion engine or the like  against corrosion
IPC: F02B3/06
Filed: 1971-12-23
Abstract: 1370110 Valves sealing SOC D'ETUDES DE MACHINES THERMIQUES 23 Dec 1971 60046/71 Heading F1B [ Also in Division F2] An I. C. engine exhaust valve comprises a valve guide mounting a poppet valve, a valve guide forming a valve seat and at least one gas duct 20, Fig. 1 connectable to a compressed gas source and extending through the valve stem guide to open into an annular space 22 surrounding the valve stem and spaced from the valve head. Supercharging compressed air from inlet passage 19 enters space 24 and is delivered by ducts 23, 20 to the space 22 surrounding the valve stem 9 to pass into annular space 25 and exhaust passage 8. An air barrier thereby prevents the upward flow of exhaust gas around stem 9. In a modification a labyrinth seal 27 is fitted at the annular space and duct 20' debouches into space 16. Cooling water is supplied via duct 29 to space 28.
Patent GB-1369480-A (GB)
Title: Pipe connection
Inventor: OOSTENBRINK A A
IPC: F16L15/00
Filed: 1971-12-31
Abstract: 1369480 Branch pipe couplings INDUSTRIELE ONDERNEMING WAVIN NV 31 Dec 1971 [8 Jan 1971] 60949/71 Heading F2G A socket 1, for connecting a branch pipe to a main pipe 7, may have a tapered screwthread engaging a preferably parallel screwthread in an externally grooved rubber sealing ring 3, so as to expand the ring into sealing engagement with the peripheral edge 6, which may be ribbed. A plastics socket may be used to connect a drain pipe to a plastics main sewer.
Patent GB-1199883-A (GB)
Title: Method for Increasing the Vitality of Mammalian Off-Spring
Inventor: BATTE EDWARD GUY
IPC: A61K31/66
Filed: 1968-12-23
Abstract: 1,199,883. Method of improving animals offspring. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 23 Dec., 1968 [27 Dec., 1967], No. 61042/68. Heading A5B. The vitality of animals offspring and foetuses is improved by administration to the pregnant female animal of an effective amount of a dialkylbeta-chlorovinyl phosphate of the formula: in which R is H or Cl and "alkyl" and "alkyl" are each C 1-4  alkyl groups or "alkyl" is methyl and "alkyl" is C 1-20  alkyl. Administration is by the oral or parenteral method in conventional formations including feedstuffs and drinking water. Preferably, the active compound is administered as an intimate mixture with a PVC resin.
Patent GB-1277030-A (GB)
Title: Improvements in plastic moulding machines
Inventor: WEBER EUGEN
IPC: B29C48/03
Filed: 1968-12-27
Abstract: 1277030 Injection moulding machines H D WRIGHT and R E LECLERC 10 Dec 1969 [27 Dec 1968] 61523/68 Heading B5A [Also in Division F1] Plasticized moulding material is injected into a mould by a plunger 71 reciprocable and rotatable in a cylinder 43, the cylinder being filled from a variable volume accumulator chamber 54 which communicates with the space beneath the plunger through an axial plunger passage 67 which opens into side ports 66 arranged to register with longitudinal channels 61 fed with material from the accumulator chamber 54. The accumulator chamber 54 is supplied with material by a screw 14 driven through a gear-box (20) having an input shaft (21) rotated by an automatically variable transmission ratio belt drive (22-27). This screw drive arrangement delivers plasticized material at a relatively constant pressure. If the screw 14 delivers material at a higher rate than injected by the plunger 71, a sleeve 53 is lifted against the action of a spring 53a to increase the volume of the accumulator chamber 54. The volume of material injected is varied by adjusting the stroke of the plunger which occurs after the point is reacted when the ports 66 are rotated out of register with the channels 61. At this point the mould is lifted to a position in which it engages and lifts an orificed, liquid cooled, cut-off plate 84. The plate 84 in turnlifts and opens an outlet valve 60 having a conical seating member 78 and an axial delivery passage (82), Fig. 8 (not shown). The mould may be for producing the final product or, as shown, a slug which is transferred to a position in which it is forced by a ram into a final product mould. The slug mould 90 (Fig. 11) comprises a mould chamber 91 within which is reciprocable a plunger 92 having an inner position determined by stops 94. The stops 94 are adjustable to vary the. capacity of the mould. This adjustment is effected by a mechanism Figs. 15-17 (not shown) in which lateral movement of a U-shaped member 115 by a wheel 117 and screw 116 is converted into axial movement of the stops 94 by the cooperation of complementary inclined grooves on the upper ends of the stops and on the U-shaped member. The mould is provided with cooling passages 99, 95. The mechanism for reciprocating and rotating the plunger 71 and for bringing the slug mould into position is described, Fig. 19 (not shown). A mechanism for reciprocating the product mould and its ram is described in Specification 1,214,715.
Patent GB-624376-A (GB)
Abstract: 624,376. Batteries. SMITS, W. B. Oct. 8, 1946, No. 30064. Convention date, Nov. 1, 1945. [Class 53] [Also in Groups XI and XXVII] In a subaqueous electric igniter (see Group XI), a water-tight casing for an electric battery 17 is provided with a check valve 28 for the escape of gases developed by the battery.
Patent GB-707566-A (GB)
Abstract: 707,566. Ignition systems. SMITSVONK, N. V. May 4, 1951 [May 30, 1950; March 31, 1951], No. 10479/51. Class 7(4) In a low-voltage ignition system an element, such as the secondary winding of a transformer, which supplies current impulses has a condenser 4 in parallel therewith and is connected at one end in series with a series connection of a rectifier 2 and a spark gap 3 and is connected at the other end to earth, the unearthed side of the condenser 4 being connected to one or more low-voltage sparking plugs 7 through a switch device, for example a distributer, whilst the rectifier and spark gap are disposed in the condenser charging circuit; the series connection of a rectifier and spark gap may be replaced by means which function as a rectifier and a spark gap, the means becoming conductive at a given voltage. The rectifier may be of the selenium of cold-cathode type.
Patent GB-748447-A (GB)
IPC: H04W88/02
Abstract: 748,447. Carrier transmission. GENERAL ELECTRIC CO. Dec. 23, 1953 [Dec. 27, 1952], No. 35782/53. Class 40 (4). [Also in Groups XL (b) and XL (c)] Impulses are transmitted over a radio link as interruptions in a 3 kc/s. modulation on the carrier and, on reception, distortion of the impulses is-reduced by using a limiting amplifier with selective negative feedback. The 3 kc/s. impulses are derived from 20 c.p.s. impulses at the transmitter and are re-converted to 20 c.p.s. impulses at the receiver. Impulses of 20 c.p.s. in line 1 are repeated on 3 kc/s. by a tone generator 6 which modulates a carrier in the transmitter 3. At the receiver, speech is passed to line 2 over transformer 9 and the 3 kc/s. impulses are fed through an amplifier 10. Valves 11 and 13 form two stages of amplification and are followed by a rectifying diode 47 and an output pentode 55 which controls a relay 54 and a 20 c.p.s. generator 65 connected to the line 2. A feed-back circuit from the anode of 13 to the cathode of 11 includes a valve 12 and a resistance-capacity blocking filter 32 the effect of which is to reduce the gain of valve 11 at frequencies other than 3 kc/s. Resistor 38 and condensers 36, 37 prevent self-oscillation of valve 12 at frequencies below the characteristic frequency of the amplifier. When relay 54 operates to repeat on impulse, contacts 66 open and reduce the gain of valve 13 so that the voltage fed to the diode 47 follows the curve 73, Fig. 2b, instead of curve 70. In Fig. 2b lines 72, 71 represent the control voltages at which relay 54 operates and releases.
Patent GB-2002914-A (GB)
Title: Electrically photosensitive particles for photo-electrophoretic migration imaging processes
IPC: G03G17/04
Filed: 1978-07-25
Abstract: The invention relates to electrically photosensitive particles for photo- electrophoretic migration imaging processes which particles comprise a compound having the structure   <IMAGE>  wherein, Z<1> and Z<2> are the same or different and each represents the non-metallic atoms necessary to complete a heterocyclic nucleus containing from 5 to 6 atoms in the heterocyclic ring, and which heterocyclic nucleus is a thiazole; a benzothiazole, a naphthothiazole; a thianaphtheno-7', 6', 4,5-thiazole; an oxazole; a benzoxazole; a naphthoxazole; a selenazole; a benzoselenazole; a naphthoselenazole; a thiazoline; a 2-quinoline; a 4-quinoline; an 1-isoquinoline; an 3-isoquinoline; a benzimidazole; a 3,3-dialkyl-3H-indole; a 2-pyridine; or a 4-pyridine nucleus;  Y represents N or a methine carbon C-G<1>; G1 and G2 are the same or different and each is H, alkyl, or aryl or taken together sufficient atoms to complete a carboxyclic ring; A<1> and A<2> are the same or different and each represents alkyl, aryl, carboxy, alkoxycarbonyl, cyano, nitro, benzoyl, benzo[b] furanoyl or together the atoms to complete a nucleus selected from indandione; 5,5-dicyclo hexane-1, 3-dione; isoxazolone; oxindole; 2,4,6- triketo hexa hydro pyrimidine; pyrazolinone; rhodanine; 2(3H)- imidazol-[1,2-a]pyridone; 5,7-dioxo-6, 7-dihydro-5-thiazolo[3,2-2]pyridmidine; 2-thio-2,4-oxazolidinedione; thiana phthenone; 2- thio-2,5- thiazolidine dione; 2- thio-4,6-diketo hexa hydro pyrimidine; 2,4- thiazolidinedione; thiozoli-dinone; 4- thia zolinone; 2-imino-2,4- oxazolinone; 2,4- imidazoli-nedione; 2-thio-2,4-imidazoline dione; 5-imida zolinone; 2,4-chromandione; 5-anthrace neone; pyrazolidindione; 1,3-dioxan-4,6-dione; indolinone; indolinthione; isoxazolinone; pyrrolo[ 1,2-a]pyrimidine-2,4-dione; and 1,3- isoquinoline dione; R<1> and R<2> are the same or different and each represents H, alkyl, aralkyl or aryl; R<3> and R<4> are the same or different and each represents H, alkyl, aryl, cyano, or taken together represent a 5 to 6 member carbocyclic ring;  m and n are the same or different and each is 0 or 1; p, q, and r are the same or different each is 0, 1 or 2.
Patent GB-2002371-A (GB)
Title: Stabilisation of saturated chlorinated aliphatic hydrocarbons against metal-induced decomposition
IPC: C07C17/42
Filed: 1978-07-31
Abstract: Decomposition during manufacture in a process involving distillation or vaporisation is prevented by introduction of a stabilising proportion of a polyalkylene glycol monoalkyl ether or a polyalkylene glycol.
Patent GB-2008879-A (GB)
Title: Relaxation oscillator
IPC: H03K4/502
Filed: 1978-10-24
Abstract: In a relaxation oscillator having its frequency determined by the charge rate of a capacitor (C1), a switch means (12) is controlled through a field effect transistor (Q1) to discharge the capacitor at a predetermined charge level when channel current through the FET (Q1) is reduced as voltage across the capacitor approaches the voltage supply level (+ V). The charge rate of the capacitor (C1) is substantially unaffected by the FET (Q1) and substantially no power is drawn to control the switch means (12) while the capacitor is charging. A duty cycle output can also be accomplished from this oscillator without substantially affecting the low power attributes thereof. In effect, the level of charge on the capacitor (C1) is sensed indirectly from the difference between the voltage across it and the supply voltage (+ V) for the capacitor charging circuit (11), rather than directly from the voltage across the capacitor itself as in the prior art. The amplitude and frequency of the oscillations can thereby depend primarily on the supply voltage (+ V) rather than restrictively on the threshold voltage of the FET (Q1). <IMAGE>
Patent GB-2032302-A (GB)
Title: Oil coater for mat
IPC: D06B1/14
Filed: 1978-10-31
Abstract: An oil coater for mats comprises a mat-supporting moving input means 3 and output means 4, a coating roller 7 arranged to contact the upper surface of the mat, a roller 11 adapted to cooperate with roller 7 and dam plates 28 to constitute a reservoir 27 for oil, means such as overflow 35 ensuring a constant level therein, and each of rollers 7 and 11 having a resilient surface 10, 13, and has means to alter the spacing between rollers 7 and 11 and also between roller 7 and backing roller 15, whereby the amount of oil applied to the mat can be controlled. Overflow from 35 may be filtered at 39 and pumped back to the tank which feeds reservoir 27. <IMAGE>
Patent GB-2034880-A (GB)
Title: Two-dimensional measuring apparatus
IPC: G01B11/02
Filed: 1978-11-11
Abstract: Two dimensional measuring apparatus includes a surface 15 on which an object to be measured can be placed and under which is an optical grating 16 comprising two sets of parallel lines perpendicular to axes at a known angle to each other, usually 90 DEG . A base 10 movable relative to surface 15 in a plane containing the directions of the axes carries probe 18 and support 19, bearing two reading heads 21, 22 each having a source, detector and an index grating with lines 23 or 24 cooperating with grating 16 to derive electrical signals indicative of movement of an index point, which is in the plane of lines 23, 24 and on the axis of probe 18. Support 13 is moveable relative to rails 11 on base 10, by wheels 12 and by sliding along their axles. <IMAGE>
Patent GB-2014663-A (GB)
Title: Gas Turbine Ducted Fan Engine
IPC: F02K3/06
Filed: 1979-01-15
Abstract: In a ducted fan engine including a multi-stage axial flow compressor 15, at least the most upstream stage 30 of the compressor is adapted to compress fluid in excess of that required by the remainder of the compressor, the excess fluid being continuously discharged through at least one aperture 29 within the compressor casing into the fan duct of the engine. The aperture 29 may be a circumferentially extending slot, including means to allow variation of its cross-sectional area.   <IMAGE>
Patent GB-2014079-A (GB)
Title: Strapped forks, spades and shovels
IPC: B25G3/36
Filed: 1979-03-08
Abstract: Straps (20 and 22) are formed wholly separately from the head (10) of the implement, and are secured to the head (10) or a part connected thereto by means of a rivet (36) or welding. <IMAGE>
Patent GB-2046193-A (GB)
Title: Aircraft Engine Installation
IPC: B64D29/00
Filed: 1979-04-10
Abstract: An aircraft engine installation wherein a gas turbine engine is supported within a tubular cowling fixed to the aircraft and all other components of the installation, e.g. air inlet and exhaust systems, depend from the cowling rather than the engine. For access to the engine, lower portion 26 of central cowling part 20 is linked to stationary upper portion 24 by jackscrew assemblies 92, 98 which are operable to lower cowling unit 26 to a position at which locks in one set of jackscrews 98 can be released to permit the lower cowling unit to be swung open about hinges in the second set of jackscrews 92. Powered actuator system 350, 352, is operable to swing lower cowling unit about the hinges to open or close the cowling and to raise and lower the engine between cowling unit 24 and ground level. To fasten cowling units 24, 26 together when the cowling is closed, interlocks are included along the mating boundaries of the units. The interlocks of each individual pair of boundaries are operated in unison by geared drive 216, 214 and both sets of jackscrews are operated in unison by second geared drive 112, 108, 106, 104. Alternatively, one drive system is selectively operable to activate the interlock assemblies or both sets of jackscrews. Engine mounting disclosed (Figs. 5, 6, not shown). <IMAGE>
Patent GB-2022154-A (GB)
Title: Self-twist yarn and method of making same
IPC: D02G3/28
Filed: 1979-05-17
Abstract: Singles yarns are false-twisted, brought together and plied and additional torque in the plying direction is applied beyond the normal equilibrium point to adjust the relationship between twist remaining in the singles yarns and the amount of ply twist. A jet device using air or steam can be used to apply the additional torque, steam being used to concurrently heat set the plied yarn.
Patent GB-2024952-A (GB)
Title: Improvements in or relating to pumps
IPC: H02K33/10
Filed: 1979-07-10
Abstract: A vacuum pump driven by an electric motor 12 comprises a reciprocating piston 194 sealed to a housing 162 by a rolling lobe diaphragm 202, buckling of the diaphragm during reciprocation being prevented by a mechanical basing arrangement 208, 212 which acts on the lobe portion of the diaphragm. The biasing arrangement is formed by balls 208 retained in contact with the diaphragm by disc 212 which has radial slits to form flexible fingers (216). The motor 12 includes a pair of relatively movable sequentially operating armatures 34, 74 which eliminate the need for any external timing mechanism or for any complex delay mechanism. A spring 228 performs the upward stroke of the piston 194 and the armature 74 the downward stroke when a coil 132 is energised through contacts 38, 91. The motor is inherently capable of operating the pump as a self-actuating demand pump. <IMAGE>
Patent GB-2026434-A (GB)
Title: Gramophone record sleeves
IPC: B65D85/57
Filed: 1979-07-12
Abstract: In a gramophone record sleeve having a pocket 5 defined between two superimposed panels 1, 2, and a flap 3 provided on one edge of the pocket for closing a side of the pocket and/or at the open mouth of the pocket for strengthening or finishing the edge of the open mouth, the flap 3 is reduced in thickness at least centrally thereof. The part of the panel 1 to which the flap is affixed may also be reduced in thickness. The reduction in thickness may be constant or progressively decreasing across the width of the flap and panel. <IMAGE>
Patent GB-2056741-A (GB)
Title: Violoncello resonating support
IPC: G10D3/00
Filed: 1979-08-16
Abstract: A violoncello support comprises a platform e spaced from the floor by a leg or legs g and connected to an element a trapped between the legs of a chair on which the player sits and the floor by two members d. The members d may be attached to element a by hinges and the legs g may be pivoted to platform e or members d. The platform e being spaced from the ground is free to vibrate. <IMAGE>
Patent GB-2053641-A (GB)
Title: Coffee harvester
IPC: A01D46/06
Filed: 1979-08-28
Abstract: A coffee harvester comprises a frame (24, 26) with oscillatory tined, shakers (32, 34) arranged one on either side of a centre line (35). The shakers have a plurality of arrays of tines (56) which are caused to oscillate about a longitudinal axis of the shaker unit by an oscillation generator (36). The oscillations have a maximum acceleration of at least 50g and the rate of acceleration from the zero velocity point of each cycle is greater than that of the corresponding since wave. The harvester includes two conveyors one below each shaker unit, and each conveyor has an upper, crop collecting run which is synchronized to move at exactly the opposite speed to the speed of advance of the harvester so that the catching trays are stationary with respect to the plants. The acceleration characteristic of the shakers is achieved by the generator 36 including eccentric weights which are selected so that they generate oscillations in the tines or shakers with a motion as close as possible to that of a saw-tooth wave instead of a sine wave. <IMAGE>
Patent GB-2058805-A (GB)
Title: Process for continuously producing polyester and spun fiber
IPC: C08G63/78
Filed: 1979-09-11
Abstract: bis- beta -Hydroxyethyl terephthalate and/or a lower polymer thereof is continuously polymerized using a plurality of vacuum polymerization reactors disposed in series and equipped with stirrers. During the polymerization, there is effected an automatic and continuous measurement of the stirring power or stirring axis reaction force of at least the last polymerization reactor among the polymerization reactors from which a polymer having a limiting viscosity ( eta ) of 0.25 or more is removed, and controlling the vacuum in the polymerization reactors based on changes in the stirring power or reaction force so that the stirring power or reaction force is kept at a prescribed level, by which the degree of polymerization of the polymer removed from the polymerization reactors is controlled.
Patent GB-2036326-A (GB)
Title: Liquid level sensor
IPC: G01F23/292
Filed: 1979-10-10
Abstract: A liquid level sensor of the total internal reflection type, which is leak proof and not sensitive to pressure or temperature, comprises a plug 1 having a face 20 which when contacting a fluid will reflect or transmit light in dependence of the refraction characteristics of the fluid, a plug retaining member 32 with surface portions which retain the plug in the member against the action of excess pressure, a light source 4 and a reflected light receiver 6 both remote from the plug and light guides 9, 9' for guiding light to and from the plug; preferably the components constituting a single cartridge. <IMAGE>
Patent GB-2039674-A (GB)
Title: Heading reference apparatus
IPC: G01C21/16
Filed: 1979-11-30
Abstract: Automatic heading reference apparatus including two angular rate sensors such as two-degree-of-freedom gyroscopes (10, 12) and at least two accelerometers (16,15) mounted on a turntable (22) on a vehicle (30). The turntable (22) can be positioned about a vehicle vertical axis (24) in one or the other of two positions 180 degrees apart for alignment. After alignment, the turntable is caged into its zero degree position, and the instruments thereafter operate in a strap-down mode with the yaw, roll and pitch angles of the vehicle computed by computer mechanisms which are sensitive to signals from the gyroscopes and accelerometers. The outputs of the gyroscopes and accelerometers are read in the zero degree position. The turntable is then turned through 180 DEG  and they are re-read. Adding and subtracting the readings in these two positions gives sum and difference signals which are related to the angles between vehicle-fixed and earth-fixed co- ordinates and the bias errors and scale factors of the rate sensors and accelerometers. <IMAGE>
Patent GB-2040599-A (GB)
Title: Method and apparatus for installing cables
IPC: H02G1/06
Filed: 1980-01-09
Abstract: A method for the installation of a cable 2 comprises arranging a plurality of rollers 8 at intervals in installation routes such as an excavated passage or trench arranging a plurality of guide pulleys 6 at intervals in said route; stretching a guide wire 4 in the route; connecting the cable delivered from a cable drum 1 to the guide wire 4 at intervals, and pulling the guide wire whereby the cable may be installed while being supported on the rollers 8, the guide pulleys being capable of installing the cable without releasing of the connection between the guide wire and the cable. <IMAGE>
Patent GB-2045098-A (GB)
Title: Soft toys
IPC: A63H3/38
Filed: 1980-01-18
Abstract: A teddy bear has conductive paws which when held cause the teddy to sing tunes or speak and its eyes to flash. The paws are connected, inside the teddy bear to a voltage source and a current sensor. On sensing a current, an electronic circuit including a microcomputer is powered up to produce the sounds and/or flash the lights. Instead, or as well, as singing, the teddy bear responds to simple spoken commands to flash its eyes or make a noise. Speech is detected by a series of tuned filters and compared with frequency/ time patterns contained in an R.O.M.. An arrangement for playing tunes and flashing eyes is also described using discrete circuitry.